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Nominal Amperage

Discussion in 'Electronic Basics' started by Clyde Gill, Dec 2, 2004.

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  1. Clyde Gill

    Clyde Gill Guest

    I know there's nominal voltages for equipment, do amperage ratings
    have a similar range?

    I'm trying to match an 120V transformer for a 5V/2amp dc device
    (router). I have in hand a 5V 2.8 amp transformer... would this blow
    it up?

    TIA

    clyde
     
  2. tempus fugit

    tempus fugit Guest

    No.

    The xformer only delivers the current that is drawn by the circuit (up to
    its max rating). IOW, you could have a 5V/2000000A xformer and it would
    still only deliver the current drawn by the circuit. You can think of
    current as being pulled, rather than pushed. Sort of like a tap - there is a
    great deal of water pressure, but the tap (like the circuit), controls how
    much water comes out. Even though there is a lot of water available, the tap
    decides how much comes out.
     
  3. Tim Williams

    Tim Williams Guest

    I want one!!!

    (And the superconducting bars to transfer it to the whatever. Ha!)

    Tim
     
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